Your Search for the most effective Zinc Sulfate Supplement is over! Exclusive Angstrom Minerals Ama-Zinc is the most concentrated liquid ionic zinc supplement available on the market today with 46,000 ppm/mgL! Just a 1/2 tsp. give you 11.5 mg of elemental zinc, 99.9% absorbed by the body, can be added to water or juice. It is a cell-ready, all natural formula with just the magnesium bonded to reverse osmosis water No other added ingredients! There are no preservatives, it is sugar free, wheat free, dairy free, and peanut free. This product is Gluten Free, Non-GMO, and suitable for both vegans and vegetarians. This product is not tested on animals. No Expiration Date! PURE Minerals do not go bad! Zinc is the mineral for acne and helps in the development of the sexual organ